DYM4 Middle temperature retarder for oil well cement

DYM4 can stick on the surface of cement hydrate to inhibit contacting between cement and water. also stick on the surface of crystal nucleons to prevent their enlarging. So it can retard hydrating of cement slurry.

Characterstic:

lDYM4 consists of various kind of compounds, such as cellulose derivative and hydroxycarboxylic acid .

lAppearance: pale yellow powder, non-poisonous, non-odor, and non-corrosivity

lNormal dosage:0.1%-1.0%(BWOC) .It is more efficient if it is used combining with USZ friction reducing additive when middle-deep well is cemented it can reduce the consistency of cement slurry and improve the rheology.

lIt can deduce consistency of cement slurry and improve the rheology

lRetard the thickening time efficiently

lGenerally used in oil wells whose circulate temperature under bore is bellow 110℃

lPreferred to be mixed without water
 

Technical specification:

Items	Specification
Appearance	Pale yellow powder
Initial consistency ,BC	≦30
Thickening time ml/80℃, 40MPa, 40min	120-270 be adjustable
Compression strength, MPa/106℃,21MPa 24h	≥14

The ingredient of the cement in the table is : Jiahua G class cement. W/C0.44 Dosage of DYM4:0.1%-1.0%  DYM5:0.4% ,water quality :distilled water

Package,storing and transportation:

lBe sacked with three-layer plastics bag,25KG per bag

l Be kept away from moisture and possible damage of the packages in transportation Be stored in a cool and dry situation .Storage life is two years